After the creation of a signal, it is required to validate it so that the data starts to be recorded and, in the case of history data, imported properly. Validation is a procedure that allows the configuration of all the parameters necessary to provide a true and accurate representation of the signal. A signal can be validated even without specifying any parameters but, in this case, the correct representation of the data is not guaranteed.
It is possible to validate signals in the edit mode of the Signals list, through the fast validation.
If the signal is virtual, the first panel is used to select the source signals to which the formula is applied. A variable is assigned to every signal added and it has to be used as reference in the formula.
Among the basic information of the signal you can change its access (default is private), its description, and its type. In the same box it is available the token generated by Databoom for the signal. The token is a code, unique within the same device, identifying signal; you need it to be able to transmit data to the platform through the use of the API.
The Enable log field indicates if the data received for the signal are stored or not. The default option is active, unchecking the checkbox, new data will not be stored. A validated signal, with disabled log, is marked with a pause symbol ❚❚ in the signals list.
A signal can be set as counter in two modes, incremental counter and differential counter. A signal is a counter when its value is cumulative. In case of incremental counter every received value represents the cumulative total from the beginning of the recording, in the case of differential counter each received value represents the total accumulated since the last communication.
The timeout threshold allows to specify a value in minutes after which notifying the user about communication miss with a notice in Signals list, Signal details and Gauge widgets.
In the following box, you can specify the unit of measurement of the signal. The value will be verified and interpreted by Databoom and if recognized, then validated.
The values substitution section allows to specify a condition (Greater Than, Less Than, Between, Equals To) that, if verified, returns any value specified by the user which will be displayed in substitution of the value received by the signal. It is possible to choose a color for every substitution, this is used as color for the signal detail widget and its light. In charts, value substitution is showed in its balloon within a label.
The last panel, Value correction, allows to provide a more correct interpretation of the received values.
In the graph visualization panel, you can choose the type of chart to display, in addition to specify an automatic or fixed scale, with settable values. Minimum granularity field is used to provide grouped values (Hourly, Daily, Monthly) in the signal details page, or to set a custom granularity (es 3 hours, 5 days, 6 months). If minimun granularity is set, the signal will show only the corresponding values. If the signal is then used in a virtual signal formula, the calculation will only use the values depending their signal granularity.
If the signal is virtual, by checking the Apply to all data field, the formula is applied to all the values of the signal regardless of the minimum granularity selected.
By checking Exclude values functionality, the user can exclude values received by the signal by filling the range fields. If a value is excluded, an alarm to the user is sent.
By enabling signal rescaling you can set the parameters to parse the input values to a more appropriate range. It is also possible to specify the number of decimal places you want display.
Once all the parameters have been set you can then validate the signal with the changes.